package de.ctdo.bunti.control;

import de.ctdo.bunti.dao.BuntiDevicesDAO;
import de.ctdo.bunti.model.BuntiDevice;
import de.ctdo.bunti.model.DeviceUpdate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.HashMap;
import java.util.Map;

@Component
public class DeviceValueCache {
    @Autowired
    private BuntiDevicesDAO devicesDAO;
    private Map<Integer, Map<String, Object>> deviceCache;

    private void init() {
        deviceCache = new HashMap<Integer, Map<String, Object>>();

        for(BuntiDevice device: devicesDAO.getAllDevices()) {
            deviceCache.put(device.getId(), device.getOptions());
        }

    }

    public void updateData(int deviceId, Map<String, Object> options) {
        if(deviceCache == null) init();

        Map<String, Object> cached = deviceCache.get(deviceId);
        if(cached == null ) {
            cached = new HashMap<String, Object>();
            deviceCache.put(deviceId, cached);
        }

        cached.putAll(options);
    }


    public DeviceUpdate getData(int deviceId) {
        if(deviceCache == null) init();

        Map<String, Object> cached = deviceCache.get(deviceId);

        DeviceUpdate du = new DeviceUpdate();
        du.setDeviceId(deviceId);
        du.setOptions(cached);
        return du;
    }


}